[PATCH] ci/install-depends: attempt to fix "brew cask" stuff

It seems that homebrew suddenly started giving us trouble, like this:

https://github.com/git/git/runs/1705953982?check_suite_focus=true#step:3:70

Here is my attempt to work it around by blindly following the suggested course of action in the error message, without knowing what I am doing X-<. I am not a Mac person.

What is frustrating is that every time we hit a minor snag like this to break one of the jobs, all other unrelated jobs are also taken down.

Help by those who know what they are doing on macOS would greatly be appreciated. Thanks.

----- >8 ----- >8 ----- >8 ----- >8 ----- >8 ----- >8 ----- We run "git pull" against "$cask_repo"; clarify that we are expecting not to have any of our own modifications and running "git pull" to merely update, by passing "--ff-only" on the command line.

Also, the "brew cask install" command line triggers an error message that says:

    Error: Calling brew cask install is disabled! Use brew install
    [--cask] instead.

In addition, "brew install caskroom/cask/perforce" step triggers an error that says:

    Error: caskroom/cask was moved. Tap homebrew/cask instead.

Attempt to see if blindly following the suggestion in these error messages gets us into a better shape.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 ci/install-dependencies.sh | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)